The Harvard referencing style is not a single style, but rather a group of styles. There are many different versions of Harvard in use at Uppsala University alone. In this guide Uppsala University Library presents just one version of Harvard. Always check with your teacher or supervisor if there are other instructions for your assignment.
All Harvard styles follow the principle that in-text citations are written within parentheses. The parentheses contain the last name of the author(s), the year of publication and sometimes a page number. At the end of the document is a reference list sorted by author last name and year where you are able to find all the necessary information about the sources.
What differs between Harvard versions is mainly the formatting of the reference list and other minor details.
It is important to be consistent when citing and to stick to one reference style through the entire document.
The version of Harvard presented here corresponds to the style "Uppsala University Library - Harvard" which can be downloaded from the Zotero Style Repository for use in Zotero or Mendeley.